Raw material selection of straw board and producing technique thereof

A technology for straw board and production process, which is applied in the direction of wood processing utensils, pretreatment and application of molding materials, etc., to achieve the effects of reducing raw material cost, low raw material cost, and simplifying process flow

Inactive Publication Date: 2008-09-17
刘金忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Crush the remaining 60%

Method used

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  • Raw material selection of straw board and producing technique thereof

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Effect test

Embodiment 1

[0016] Firstly, the rice straw, wheat straw and reed are machine-rolled into strips and sheets. Next, cut 40% of them into 30mm-80mm long pieces, and crush the remaining 60%. Then enter the dehydration process. Straw, rice husk and sawdust must be dehydrated. Make the water content <5%. Next, the ratio of raw materials is carried out. Mix with 40% of 30mm-80mm long straw segments and 60% of crushed straw, or mix with 40% of straw segments and 60% of sawdust or rice husk. Sizing while mixing. The amount of glue used can be determined according to the type of glue used. If urea-formaldehyde resin glue is used, it can be applied according to 10% of the total weight of the blank. If isocyanate glue is used, it can be applied at 5% of the total weight of the blank. The surface layer is made of 120g corrugated paper or 0.8mm thick veneer single piece. The top layer is to be trimmed. On the basis of the national standard 2440mm×1220mm (length×width), a margin of 50mm is rese...

Embodiment 2

[0018] In the pretreatment process, the reeds are machine-rolled into strips and slices, and then cut into 30mm-80mm long pieces, and the rice straw or wheat straw is crushed with a grinder. All raw materials are then dehydrated. Make the water content <5%. Then enter the proportioning and mixing process. First cut the small reeds with a length of 30mm-80mm, and apply 5% isocyanate glue to the crushed straw material according to the ratio of 4:6 and stir together for 3-5 minutes. The surface layer is made of 220g corrugated paper. First cut the corrugated paper (without spraying glue) and lay it on the aluminum formwork. Enter the shaping process. Lay the stirred blank on the surface layer with a thickness of 40mm. Then lay the surface layer and upper formwork. Go to the heating and pressing process. Straw boards with a thickness of 10mm can be produced. It can press 20 sheets each time. The pressure is 400T. The temperature was 160°C. The time is 8 minutes. After ...

Embodiment 3

[0020] Use 40% of 30mm-80mm long straw segments, match with 60% crushed material, apply 10% urea-formaldehyde resin glue, and stir for 5 minutes. Enter the shaping process. The surface layer is made of 120g corrugated paper. After the surface layer is cut, it needs to be sprayed with glue. Then lay the glued face paper on the template. Lay the sizing and mixing blank on the surface layer with a thickness of 30mm. Then lay the surface layer and formwork, and send it to the press. The pressure is 400T, the temperature is 210°C, and the time is 8 minutes. A straw plate of 2440mm×1220mm×8mm is pressed. Cut the periphery after cooling, that is, the production is complete.

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PUM

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Abstract

The invention relates to a raw material selection method and a manufacturing process of a straw board, belonging to the technical field of non-wood plant straw board, which is characterized in that a new raw material formulation and the manufacturing process are provided, in which wheat straw, reed, rice hull and sawdust are utilized to substitute for wood, so as to produce non-wood board. The raw material formulation and manufacturing process are aimed at eliminating the defects in the prior manufacturing process of non-wood plant straw board, and the manufacturing process comprises the following steps: raw material treatment, dehydration, raw material proportioning, glue applying and mixing, veneering treatment and laying, blank pavement and shaping, heating and pressurizing, and cutting edges. The straw board thus produced has the advantages of low costs, and high strength.

Description

technical field [0001] The raw material selection and production process of a straw board of the present invention relate to the non-timber plant straw board production industry. It is a production process that uses plant straw instead of wood to produce boards. Background technique [0002] In recent years, the process of using straw as the main raw material to produce boards has been continuously introduced. But there seem to be many flaws. Straw composite plate and its manufacturing method (CN1294094) It uses one of rice straw, rice husk and straw as the main raw material, together with light-burned powder and modifier, is stirred and injected into the mold, added with glass fiber, dried and demoulded, and solidified and other processes to manufacture panels. Although the boards produced by this process can replace wood boards, there are certain problems in environmental protection due to the use of a large amount of chemical raw materials and glass fibers. Secondly, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/02B27N1/00B27N1/02B27N3/10B27N3/26B27N3/18
Inventor 刘金忠
Owner 刘金忠
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